The group says other barriers in Michigan voting laws are a lack of same-day registration, a lack of convenience voting that's done a day early and difficulty in voting absentee.

Fred Woodhams, a spokesman for Michigan Secretary of State Ruth Johnson, says the state doesn't have any plans to use online voter registration or same-day registration. Woodhams says such changes could open up a bigger window for voter fraud.

He says the Secretary of State's office is looking into legislation that would allow convenience voting.